/Engine/Source/Runtime/Engine/Classes/PhysicsEngine/BodyInstance.h
Add a velocity change impulse to this body and a particular world position
void AddVelocityChangeImpulseAtLocation ( const FVector & Impulse, const FVector & Position, const [FAsyncPhysicsTimestamp](API\Runtime\Engine\GameFramework\FAsyncPhysicsTimestamp) TimeStamp, [APlayerController](API\Runtime\Engine\GameFramework\APlayerController) * PlayerController )